PRAGUE, CZECH REPUBLIC - MARCH 20: Prince Charles, Prince of Wales and Camilla, Duchess of Cornwall study the Crown Jewels of the Czech Republic as they tour Prague Castle on March 20, 2010 in Prague, Czech Republic. Prince Charles, Prince of Wales and Camilla, Duchess of Cornwall are on a three day trip to the Czech Republic as part of a tour of Eastern Europe that takes in Poland, Hungary and the Czech Republic. (Photo by John Stillwell - Pool/Getty Images)
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